v0.22

This release contains the following changes:

• Migrate to GTK4.
• Add Greek translation by @lepa22.
• Add Korean translation by @jullee96.
• Add Norwegian Bokmål translation by Allan Nordhøy.
• Add Occidental translation by OIS.
• Add Arabic translation by Mohamed Benkouider.
• Add Urdu translation by Ahmed Iqbal.
• Add option to show title buttons in fullscreen mode.
• Add option to present the window when opening files.
• Change default screenshot filename template to FILENAME-TIMESTAMP (%f-%P).
• Fix inaccurate timestamp preview.

This listing is incomplete. See git log for complete changelog.